Type-writing machine.



BEST AVAILABLE COP No. 786,885. .PATENTED APR. 11, 1905. 0. N., PAY & H. HOGHKLASSEN.

TYPE WRITING MACHINE.

APPLICATION FILED mm: s. 1902.

UNITED STATES sEsT AVAILABLE COP Patented April 11, 1905.

PATENT OFFICE.

CHARLES N. FAY AND HENRY HOCHKLASSEN, OF CHICAGO, ILLINOIS, ASSIGNORS TO FAY-SHOLES COMPANY, OF CHICAGO, ILLINOIS, A

CORPORATION.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 786,885, dated April 11, 1905.

Application filed June 6, 1902. Serial No. 110,462.

T0 (0% whom, it inmy concern:

Be it known that we, Cnnunns N. FAY and HENRY HOCHKLASSEN, citizens of the United States, and residents of Chicago, in the county of Cook and State of Illinois, have jointly invented certain new and useful Improvements in Type-W'riting Machines, of which the following is a full, clear, and exact description.

This invention has relation to the improvementof the pressure mechanism employed for retaining the paper against the platen; and the object of the invention is to provide improved means whereby the pressure on the paper may be relieved when desired. This object of invention is accomplished by the features of improvement hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the claims at the end of this specification.

Figure 1 is a plan view of a platen and platen-frame having our invention applied thereto. Fig. 2 is an enlarged view, in vertical transverse section, on line 2 20f Fig. 1. Fig. 3 is a view in section on line 3 3 of Fig. 1, parts being broken away. Fig. 4 is a detail View, in front elevation, of the pressure mechanism for holding the paper against the platen. Fig. 5 is a detail view, in horizontal section, of the release-lever, &c. -Fig. 6 is a view similarto Fig. 3, butshowing the presserroll released.

A designates the usual cylindrical platen, that is journaled in suitable bearings within the end bars B of the platen-frame. These end bars B are connected at front and rear by the longitudinal rods 2 and 3. Upon the front rod 2 of the platen-frame are mounted the pressure devices for holding the ,paper against the platen at such points, these devices being longitudinally adjustable upon the rod. Two of these pressure devices are shown; but as such pressure devices are duplicates a description of one will answer for both. As shown, the pressure devices at each end of the platen comprise a presser-roll C, that is journaled in a swinging frame orsupportconsisting of side bars 6 and 7, united by a crossbar 8, the side bars 6 and 7 being formed with holes through which loosely passes the front rod 2 of the platen-frame. Between the side bars 6 and 7 of the presser-roll frame and encircling the front rod 2 of the platen-frame are the side bars 9 and 10, that are connected by a cross-bar 11, to which cross-bar is attached a presser-spring 12, that extends down and partially around the 'platen A. Preferably the presser-spring 12 has its upper end bent, clearly shown in Fig. 3, and is attached by a screw 13 to the cross-bar 11 of the lower swinging frame or support. A coilspring 14 encircles the front rod 2 of the platen-frame, and the central portion of this coil-spring is formed with a loop 15, that engages the head of a screw 16, extending inwardly from the cross-bar 8 of the presserroll frame, while the free ends 17 of the coilspring bear against the spring 12 where it rests upon the cross-bar 11. The coil-spring 14 thus serves to draw the swinging frames toward each other, and so force the presserroll C and the spring-plate 12 against the surface of the platen A or paper thereon, and the tension of the spring 14 may be varied by the adjustment of the screw 16. A nut 19 upon the outer end of the screw 16 enables'the screw to be adjusted to any desired extent, and, if

desired, the outer end of the screw 16 may be slotted to receive a tool in order to facilitate the turning of the screw.

One of the side bars 6 of the presser' roll frame is formed with an offset part 20, through 1 which passes a screw or pin 21, .on which is pivotally mounted the releasing-lever E. As shown, this releasing-lever E is formed with a handle 0 and with an offset 23 and with a heel or extension 24. The offset 23 is arranged immediately behind a lug 25, formed in piece with and extending upwardly from one of the side bars 9 and 10 of the swinging frame that carries the presser-spring 12. l'Vhen the lever E is in the normal position, (shown in Figs. 1 to 4: of the drawings,) the coiled spring 14: serves to force the presserroll C and the presser-spring 12 against the platen A or the paper thereon. When, however, it is desired to relieve the pressure of the roll C and of the spring 12 in order to shift the paper upon the platen or for any other purpose, the operator will turn forwardly the release-lever E from the position shown in Figs. 2 and 3 to the position shown in Fig. 5. As the lever E is thus swung forward its offset or extension 23 will bear against the lug 25 of one of the side bars 9 of the swinging frame that carries the presserspring 12 and the swinging frames that carry the presser-roll C, and the presser-spring 12 will thus be swung forwardly a slight distance against the force of the coil-spring 14 and the pressure of the roll C and of the presserspring 12 will be withdrawn from the platen or the paper thereon. The heel or extension 24 of the lever E will limit the movement of the lever in forward and downward direction by contacting with the edge of the bar 9 of the presser-spring frame. \Vhen the operator desires to throw the presser-roll O and presser-spring 12 into action again, the releaselever E will be returned to the position seen in Figs. 2 and 3, when the coil-spring 14 will force the presser-roll and presserspring against the platen. Preferably a concavoconvex spring-washer a is mounted on pin 21 to frictionally retain lever E against accidental movement.

Ihe swinging frames or supports for the presser-roll C and the presser-spring 12 are similar in construction to corresponding parts setforth in Letters Patent No. 629,437, granted to Charles N. Fay July 25, 1899, and it will be understood that the swinging frames for the presser-roll and presser-spring are free to be slid lengthwise of the rod 2 in order to adjust these rolls for sheets of paper of different widths.

It will be understood that the precise details of construction above set out may be .Varied without departing from the spirit of the invention. Thus, for example, a presscr- :roll might be substituted for the presser- "spring 12, as in the Fay patent above mentioned, or the presser-spring or other pressure device might be substituted for the presser' roll C.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a type-writing machine, the combination with the platen and platen-frame, of a pair of pressure devices mounted upon the platen-frame and each movable to and from the platen, said pressure devices being connected together and longitudinallyadjustable upon the platen-frame, spring mechanism for pressing said devices against the platen and a releasing-shifter connected to said devices and longitudinally adjustable therewith arranged to shift said devices and relieve the pressure exerted thereby upon the platen.

2. In a type-writing machine, the combination with the platen and platen-frame, of a pair of pressure devices each shiftable to and from the platen, apair of pivoted supports for ing said pressure devices toward the platen and a releasing-shifter connected to and longitudinally adjustable with said pivoted supports arranged to spread the same and relieve the pressure exerted by said devices upon the platen.

3. In a type-writing machine, the combination with the platen and platen-frame, of a pair of pressure devices shiftable to and from the platen, a pair of pivoted supports therefor mounted upon the platen-frame and connected together to shift longitudinally thereon,spring mechanism for forcing said pressure devices against the platen, a releasing-shifter carried by one of said pivoted supports and arranged to engage the other of said supports to relieve the pressure exerted by said devices upon the platen.

4. In a type-writing machine, the combination with the platen and platen-frame having a rod extending lengthwise in front of the platen, ofapair of pressure devices and swing ing supports therefor adjustable lengthwise upon said rod, a common spring for forcing both of said devices toward the platen and a releasing-shifter connected to and adjustable with said pivoted supports arranged to spread the same and relieve the pressure exerted by said devices upon the platen.

5. In a type-writing machine, the combination with the platen and platen-frame having a rod extending lengthwise of the platen, of a pair of pressure devices and swinging carriers therefor adjustable together lengthwise upon said rod, 2. spring for forcing said pressure devices against the platen and a releasing-shifter mounted upon one of said swinging carriers and arranged to engage the other to relieve the pressure of both of said devices upon the platen.

6. In .a type-writing machine, the combination with the platen and platen-frame, of upper and lower pressure devices for pressing the paper against the platen, swinging frames or supports therefor connected together and adjustable longitudinally upon the platenframe,spring mechanism for forcing said pressure devices toward the platen and a movable release device'carried by one of said swinging frames or supports and having a part adapted to engage with the other of said swinging frames or supports in order to relieve the pressure of said devices upon the platen.

7. In a typewriting machine, the combination with the platen and platen-frame, of upper and lower pressure devices for pressing the paper against the platen, swinging frames orsupports carrying said pressure devices, said swinging frames being pivotally mounted upon the front rod of the platen-frame and shiftable together longitudinally thereon, spring mechanism for forcing said pressure IIO devices toward the platen and a movable release device carried by one of said swinging frames or supports and having a part adapted to engage with the other swinging frames or supports in order to relieve the pressure of said devices upon the platen.

8. In a type-writing machine, the combination with the platen and platen-frame, of up per and lower pressure devices for pressing the paper against the platen, swinging frames or supports therefor connected together and longitudinally adjustable upon the platenframe, spring mechanism for forcing said pres sure devices toward the platen and a movable release device arranged to spread said pres sure devices apart and so relieve their pressure upon the platen.

9. In a type-writing machine, the combination with the platen and platen-frame, of upper and lower pressuredevices for pressing the paper against the platen, swinging frames or supports therefor connected together and adjustable longitudinally upon the platenframe, spring mechanism for forcing said pressure devices toward the platen and a movable release device comprising a pivoted lever mounted upon one of said supports and having an offset or cam arranged to engage the other of said supports whereby said pressure devices are spread to relieve their pressure upon the platen.

10. In atype-writing machine, the combination with the platen and platen-frame, of upper and lower pressure devices for pressing the paper against the platen, swinging frames or supports therefor connected together and longitudinally adjustable upon the platenframe, spring mechanism for forcing said pressure devices toward the platen and a movable release device comprising a pivoted lever mounted upon one of said supports and having an offset or cam and a lug or offset upon the other of said supports arranged in position to be engaged by said cam in order to spread said swinging frames or supports and so relieve the platen from the pressure of the devices carried by said frames or supports.

11. Inatype-writing machine,thecombination with a platen and platenframe,of a swinging support pivoted upon the front rod of the platen-frame and longitudinally adjustable thereon, a pressure-roller carried by said suport, a release-lever pivotally mounted on said ustable swinging support and provided a cam or offset, an abutment adjustable id support on the platen-rod arranged aged by said cam or offset of said er to shift said swinging support he pressure of said roller upon a stop for limiting the moveease-lever.

'riting machine, the combinaen and platen-frame, of u p sure devices for pressing the BEST AVAlLABLE COP paper against the platen, swinging frames or supports carrying said pressure devices, said frames or support-s being pivoted to support their pressure devices upon opposite sides of the front rod of the platen-frame and connected together to shiftlongitudinally thereon, a spring coiled upon said front rod of the platen frame and engaging said swinging frames or supports and a movable release device carried by one of said swinging frames or supports and having a part adapted to engage with the other of said swinging frames or supports in order to spread said frames and thus relieve the pressure against the platen of the devices carried thereby.

13. In a type-writing machine, the combination with the platen and platen-frame, of upper and lower pressure devices for pressing the paper against the platen, swinging frames or supports for carrying said pressure devices, a common spring for forcing both of said pressure devices toward the platen and an adjustingscrew connecting one end of said spring with one of said swinging frames 01' supports.

14:. I n a type-writing machine, the combination with the platen and platen-frame, of upper and lower pressure devices for pressing the paper against the platen, swinging frames or supports carrying said pressure devices, said frames or supports being pivoted to support their respective pressure devices upon opposite sides of the front rod of the platen, a common spring for forcing both of said pressure devices toward the platen, an adjusting-screw connecting one end of said spring with one of said swinging frames or supports and a release-lever pivoted to one of said frames or supports and arranged to engage the other and thus spread said supports and relieve the pressure exerted by said devices against the platen. I

15. In atype-writing machine, the combination with the platen and platen-frame, of upper and lower pressure devices for pressing the paper against the platen, swinging frames or supports therefor connected together and longitudinall y ad just-able upon the platen-frame, a spring for forcing said pressure devices toward the platen, a screw having its inner end connected to said spring and its outer end provided with means whereby the screw may be adjusted to vary the tension of the spring, and a movable release device carried by one of said swinging frames or supports and having a part adapted to engage with the other of said swinging frames or supports in order to relieve the pressure of said devices upon the platen.

16. The combination with the platen and with the platen-framehaving a rod extending longitudinally of the platen, of a pair of pressure devices each shiftable to and from the platen, a pair of pivoted supports therefor IIO 786,885 BESTAVAILABLE COPY both mounted upon the common platen-rod gage the othertospread said supports and thus and connected together to shift longitudinally relieve the pressure exerted by said devices I thereon, said pivoted supports being arranged against the platen.

to support their respective pressure devices CHARLES N. FAY.

on opposite sides of said platen-rod, a spring HENRY HOCHKLASSEN.

for forcing said pressure devices against the platen and a releasing-shifter carried by one A of said pivotel supports and arranged to en- Witnesses:

HARRY L. GLAPP, ALBERTA ADAMICK. 

